The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 11, 2021
Filed:
Jun. 30, 2017
One Connect Smart Technology Co., Ltd. (Shenzhen), Guangdong, CN;
Frank Yifan Chen Lu, Guangdong, CN;
Pengfei Huan, Guangdong, CN;
Yu Zhang, Guangdong, CN;
Yuxiang Huang, Guangdong, CN;
One Connect Smart Technology Co., Ltd. (Shenzhen), Shenzhen, CN;
Abstract
A method includes: a supervisor writes a digital certificate and a corresponding first public key into an intelligent contract of a blockchain corresponding to an asset type to be supervised, so that all institutions with asset accounts under the asset type can obtain the first public key of the supervisor through the digital certificate, so as to generate an additive homomorphic key for homomorphic encryption of the balance of an asset account; when checking the balance of a new account of a transactor, the supervisor obtains a public key in a public-private key pair corresponding to the new account, generates an additive homomorphic key based on a supervision private key corresponding to the supervisor and a predetermined key exchange protocol and the public key in the public-private key pair according to the key exchange protocol, and decrypts the encrypted balance of the new account, using the generated additive homomorphic key.